In many countries, stop signs are red and have a similar appearance. What BEST explains this tendency?

Question

A.
It makes it easier for all cultures to recognize them.

B.
Traffic signs are usually red so they will be noticed.

C.
One country probably chose red and the rest followed.

D.
Most signs are made by the same company and are similar.

Answer 1

The BEST explanation for why stop signs are red and have a similar appearance in many countries is:

C. One country probably chose red and the rest followed.

This choice highlights the idea that the standardization of traffic signs, including stop signs, may have originated from early adoption by one country (such as the United States), which influenced others to adopt similar colors and designs for consistency and safety in road use.